The Durgo Air Admittance Valves is installed straight on to the waste pipe, thus avoiding a hole in the roof that costs time and money, and which could begin to leak and cause damp and other damage to the building. The valve opens at negative pressure and lets air into the system, which equalises the pressure and stops the water being sucked out of the water traps. It stays closed and sealed at normal and excess pressure.
Durgo Air Admittance Valves have high airflow capacity and a reliable construction in ABS plastic with a EPDM rubber sealing. All Durgo Air Admittance Valves are tested, checked and CE labelled in compliance with current standards. The valve is available in a large range of sizes to fit the most common waste pipe dimensions from 15 mm to 160 mm customised to fit commonly used drainage standards worldwide.
Click on the requested dimension standard in the list on the right.